1. Support effect of Ni/mesoporous silica catalysts for CO2 reforming of CH4.
- Author
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Chen, Jing, Piao, Wen Xiang, Jin, Long Yi, Li, Zhenghua, Zhang, Fan, Kim, Ji Man, and Jin, Mingshi
- Subjects
MESOPOROUS silica ,CATALYSTS ,CATALYSIS ,X-ray diffraction ,ELECTRON microscopy - Abstract
Abstract: Mesoporous silica KIT-6-, SBA-15-, and MCM-41-supported Ni catalysts (Ni/KIT-6, Ni/SBA-15, and Ni/MCM-41) were prepared via impregnation method and studied for CO
2 reforming of CH4 . The catalysts were characterized by X-ray diffraction analysis, N2 physisorption measurements, scanning electron microscopy, transmission electron microscopy, and temperature-programmed oxidation (O2 -TPO). The Ni/KIT-6 catalyst exhibited higher catalytic activity and long-term stability compared with Ni/SBA-15 or Ni/MCM-41. The conversion of CH4 and CO2 over Ni/KIT-6 was 99 and 99 %, respectively. The superior catalytic behavior of Ni/KIT-6 is closely related to the large-pore cubic Ia3d structure of KIT-6, which enhanced dispersion of Ni nanoparticles, reduced carbon deposition, and increased diffusion of reactant and products.Graphical Abstract:[ABSTRACT FROM AUTHOR]
- Published
- 2018
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